RBBS-PC (acronym for Remote Bulletin Board System for the Personal Computer) was a freeware, open-source BBS software program.
It was written entirely in BASIC by a large team of people, starting with Russell Lane and then later enhanced by Tom Mack, Ken Goosens and others.
[1] In 1982, Larry Jordan of the Capital PC Users Group started modifying some existing BBS software that had been ported from CP/M by Russell Lane.
[2] The first major release of this effort, RBBS-PC CPC09, in May 1983 was written in interpreted BASIC and included the Xmodem file transfer protocol added by Jordan.
The documentation from an early 1984 CPC12.1 release lists the following conditions:[3] In the final 17.4 release from 1992 the license conditions were almost identical:[1] While the modified form distribution was not allowed, the documentation encouraged to publish and share modifications (bug fixes, new features) as patch files against the original source code.